Number of Outside Feeders Between 2 Sections of a Building (NEC 225.30)

[david luchini]

but, generally the conductors to the line side of that setup are Service Conductors from the Utility Transformers, not a feeder from a breaker located in an existing Modular Metering Center upstream from it.

Generally, yes...but the OP is trying to work out a Code compliant solution for a situation that probably wouldn't be viewed as a typical arrangement.

 

[zemingduan]

Yes a modular meter center with a main circuit breaker and load side meters are very common, but, generally the conductors to the line side of that setup are Service Conductors from the Utility Transformers, not a feeder from a breaker located in an existing Modular Metering Center upstream from it.


Oh well,,

Jap>

David got me right. I am talking about One 800A service disconnect at section A electrical room and one 800A feeder to utility meter modules mounted at outdoor wall space at section B (PECO is ok with this metering configuration) V.S. One 800A service main breaker with utility meter modules at the electrical room in section A and (15) 150A feeders to section B.

I am trying to figure out are both solutions code compliant and which is the better solution.

 

[jap]

Generally, yes...but the OP is trying to work out a Code compliant solution for a situation that probably wouldn't be viewed as a typical arrangement.

I

David got me right. I am talking about One 800A service disconnect at section A electrical room and one 800A feeder to utility meter modules mounted at outdoor wall space at section B (PECO is ok with this metering configuration) V.S. One 800A service main breaker with utility meter modules at the electrical room in section A and (15) 150A feeders to section B.

I am trying to figure out are both solutions code compliant and which is the better solution.

This is where I get lost.

If the (1) 800 amp service disconnect is located in section A electrical room will you not have to have the utility metering located in Section A Electrical room ahead of this single 800 amp service disconnect?

I'm getting lost in the 800 amp service disconnect in panel room A feeding utility meter modules at outdoor wall space at building B.

To me you're going to have to have the Utility Metering ahead of this Service Disconnect otherwise are you not actually running service conductors through building A to feed the utility metering at Building B?

I guess my question is this 800 amp service disconnect actually strictly a service conductor disconnect ? or will it have overcurrent protection in it and be grounded and bonded ?

Jap>

 

[david luchini]

If the (1) 800 amp service disconnect is located in section A electrical room will you not have to have the utility metering located in Section A Electrical room ahead of this single 800 amp service disconnect?

No. 800A service disconnect, supplies an 800A feeder which is routed to an 800A modular meter bank at Building B.

Nothing requires utility metering to be ahead of a service disconnect.

 

[jap]

No. 800A service disconnect, supplies and 800A feeder which is routed to and 800A modular meter bank at Building B.

Nothing requires utility metering to be ahead of a service disconnect.

Interesting and very odd.

Not a normal setup in our area.

So who pays the bill should someone decide to tap that 800 amp feeder before it gets to buildng B?

JAP>

 

[zemingduan]

No. 800A service disconnect, supplies an 800A feeder which is routed to an 800A modular meter bank at Building B.

Nothing requires utility metering to be ahead of a service disconnect.

If the (1) 800 amp service disconnect is located in section A electrical room will you not have to have the utility metering located in Section A Electrical room ahead of this single 800 amp service disconnect?

I agree with David. In my area PECO doesn't require the utility meter to be ahead of service disconnect. We have many projects that PECO is OK with having the distribution switch board in the basement electrical room and having utility meters in electrical closets/rooms on each upper level floors.

 

[jap]

I agree with David. In my area PECO doesn't require the utility meter to be ahead of service disconnect. We have many projects that PECO is OK with having the distribution switch board in the basement electrical room and having utility meters in electrical closets/rooms on each upper level floors.

That's interesting.

Power companies around here are not as generous with the accessibility of unmetered power.

We cant even use an LB into the line side of a meter base because it allows access to unmetered power.

Much less, 800 amps worth of it which would be available in this scenario.

JAP>